Half to henry m



(Model.)

J. P. MONTGOMERY.

GRATB. l

No. 253,880. Patented Feb. 21,1882.

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UNITED STATES PATENT OFFICE.

JOHN F. MONTGOMERY, OF TAUNTON, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO HENRY M. RYDER, OF SAME PLAGE.

GRATE.'

SPECIFICATION forming part Aof Letters Patent No. 253,880, dated February 21, 1882. Application filed November 14, 1881. (Model.)

shaking them; and the object of my improve-v ment is to give a reciprocating motion to alternate bars, sov that while part of the bars move in one direction the others will move inthe opposite direction.

In the accompanying drawings, which illustrate a stove-grate embodying my invention, Figure l is a plan or top view of a grate with six bars, which are sufcient to illustratermy improvement. Fig. 2 is a bottom view of the same. Fig. 3 is alongitudinal section through the operating-bar, whose axis coincides with the axis of the dumping-frame, and which extends through one of the journals of the frame, made hollow for thatpurpose. Fig. 4. is a transverse section through the connecting arm or lever, which vibrates on a fulcrum-and takes hold of downwardlyprojecting pins on the operating-bar and on the bar next to it on line .fr w. Fig. 5 is a transverse section through one ofthe vibrating standards on line y y.

The frame A is provided with journals c and a', on which it rests when in place, and on which it is turned for dumping, and consists of two end bars, a2 a3, connected .by longitudinal bars a4. These bars a4 are joined at or near their middle by a connecting-bar, a5, provided with a pin, a, forming a fulcrum, On which the connectin g arm or lever B (hereinafter referred to) vibrates. Each of the bars a4 of the frame A has two seats at each end, in which are seated four vibrating standards, D. These vibrating standards D are provided with a series of notches, d, in their upper edges, alternately shallowanddeep,theshallowones beingformed to tit notches in alternate grate-bars, while the deep ones allow the other grate-bars to pass through them without contact.

The grate-bars E are placed parallel with each other and rest on the standards D, the notches in the alternate bars fitting on their corresponding standards. One ofthe bars, E', is placed with its axis coincidn g with the axis of the frame and extends through the hollow journal a', in which it is capable of being reciprocated. A feather, c', works in a slot in the hollow journal and causes the frame to move with the bar E when it is turned. The outer extremityof the bar E is properly shaped to receive a'suitable device for manipulating it. A downwardprojecting pin, e2, is attached to the bar E', and a similar pin to a bar next to it. These pins are inserted in openings in the arms of the connecting-lever B. Cap-pieces a7 are placed over the ends of the grate-bars to guide them and to hold them in place, and are attachcd to the frame A by screws or bolts. One half of the hollow journal a is cast on one of the cap-pieces, the other half being cast on the frame, and thejournal a may be cast either on the other cap-piece or on the frame. These cap-pieces are perforated to increase the airinlets.

In operation the bar E is reciprocated and imparts motion to the alternate bars that are mounted on the same standards that it rests on, and through the connecting-lever B also imparts a reverse motion to the bar next it, which communicates its motion to the bars resting on the same standards that it rests on, so that all the bars reciprocate in alternate Opposite directions, thereby preventing cinders from loecoming wedged in between the bars, and breaking up any clinkers that may be formed. By turning the bar E the feather e causes the other bars and the frame to turn with it, and the grate is thereby dumped.

I am aware of Patent No. 155,330, September 22, 1874, to C. A. Miller, which shows each bar supported at each end upon a pivoted arm. I am also aware that J.' A. Moftt in his Patent No. 190,236, MayY l, 1877, shows alternate bars reciprocated in slides byconnecting them in two sections to a longitudinallydivided shaft; `and I am also aware that H. M. Ryder inhis Patent No. 249,205, November 8, 1881, shows the bars connected together, so that the oscillation of one will cause the others to oscillate.

In my improved grate all the bars moving ed on one peir of vibratin g standards, the other hrating standards, so that only two pairs of set of bars mounted on a second pair of vibratthcse standards are required for any number ing standards, e har of one set being connectof bars reciprocating alternately in opposite ed to a bar of the other set by a lever, so that i5 5 directions. Either grate-bar o' one set can be by reciprocating one set the other set will reconnected to n grate-bar of the other set by a ciprocate in the opposite direction, substanlever, so that motion in opposite directions tiaily as and for the purposes set forth. may be communicated from one setto the other. JOHN F. MONTGOMERY.

I claim as my invention- Witnesses: [o The improved grate herein described, havin g HENRY M. RYDER,

one set of bars moving in one direction mount- J. E. MAYNADIER.

in one direction are mounted on the same vi- 

